ST 512 Midterm: ST 512 NCSU pMidterm.key
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For true/false questions, circle either true or false. R( 1| 0) = 0. 305 (ss[r] for simple linear regression of y on x1) Some critical values from f distributions which might be useful here are. F (0. 95, 1, 60) = 4. 001, f (0. 95, 2, 60) = 3. 150, f (0. 95, 1, 62) = 3. 996. The completed anova table (for the full model) 0. 039 = 10. 1 (d) the comparison of models 1 and 3 is appropriate here (model 1 nested in model 3): 0. 039 = 12. 4 which exceeds f (0. 95, 1, 60) = 4. 001 so we reject. H0 : 2. 1 = 0 at level = 0. 05 and choose the model 3 over model 1. Yes, we should incorporate 2 into the model. M s[e]f (e) r2 = r2 y x1,x2 = ss[r]3. 3. 158 = 0. 25 = 25% (f) r2 yx2 x1 = r2.
